OLDSMAR — The grand finale for the city's yearlong 100th birthday celebration will take place Saturday. The Centennial Concert will be held from 5 to 10 p.m. at Tampa Bay Downs, 11225 Racetrack Road. Performers include John Cafferty and Michael Antunes of the Beaver Brown Band; Robby Steinhardt, former violinist for Kansas; Steve Augeri, former lead singer of Journey; and Buck Dharma, lead singer and guitarist for Blue Oyster Cult. Tickets are $25 and will be available at the front gate. For information, visit oldsmar100.com.